Interference Does Not Change Frequency of the Original Waves
Incorrect Thinking
If two waves interfere destructively, the waves lose their original frequency or stop existing.
Why Students Think This
Students often mistake the temporary resultant displacement for a permanent alteration of each wave.
Correction
Interference changes the resultant displacement pattern at a point, but each wave continues with its original speed, frequency, and wavelength after overlap.
Links
- Related: superposition